Closed
Description
TypeScript Version: master
Code
(''.match(/ /) || []).map(s => s.toLowerCase());
Expected behavior:
$ node built/local/tsc.js --lib es6 --strictNullChecks index.ts
Actual behavior:
$ node built/local/tsc.js --lib es6 --strictNullChecks index.ts
index.ts(1,1): error TS2349: Cannot invoke an expression whose type lacks a call signature.